chapter  3
8 Image channel rejection
Pages 1

The formula can be rearranged to make fRF the

subject, as follows:

fRF = fLO ± fIF

In other words, there are two potential radio

frequency signals that can mix with the local

oscillator signal in order to provide the required

IF. One of these is the wanted signal (i.e. the

signal present on the channel to which the

receiver is tuned) whilst the other is referred to as

the image channel.